doc update

Author: HamzaAtDiscord

docs/developer_tools/Embedded_App_SDK.mdx

@@ -1337,7 +1337,8 @@ No scopes required
 
 #### OpenExternalLinkResponse
 
-> **Note:** `{ opened: null }` is returned on older Discord clients that do not report the result of the open link action.
+> warn
+> `{ opened: null }` is returned on Discord clients before December 2024 that do not report the open link result.
 
 | Property | Type            |
 |----------|-----------------|